Provides utility functions, and classes for working with the java.util.stream package, or more generally, with Java 8 lambdas. More specifically, it attempts to address the fact that lambdas are supposed not to throw Exceptions, at least not checked Exceptions, AKA instances of Exception. This enforces the use of constructs like:

Consumer<java.lang.reflect.Method> consumer = m -> {
    try {
        m.invoke(o, args);
    } catch (Throwable t) {
        throw Failable.rethrow(t);
    }
};
stream.forEach(consumer);

Using a FailableStream, this can be rewritten as follows:

Streams.failable(stream).forEach(m -> m.invoke(o, args));

Obviously, the second version is much more concise and the spirit of Lambda expressions is met better than in the first version.